What is the technical term for classic dandruff?

The technical term for classic dandruff is known as pityriasis capitis simplex. This condition is characterized by the presence of small, white flakes on the scalp caused by the shedding of dead skin cells. It is often a benign and common issue, typically exacerbated by dry skin or certain scalp conditions.

In contrast, the other options represent different conditions; alopecia areata is an autoimmune disorder leading to hair loss in patches; seborrheic dermatitis is a more severe form of dandruff that presents as an inflammatory condition impacting not just the scalp but other oily areas, resulting in red, flaky, and itchy skin; and psoriasis is a chronic skin condition that causes rapid skin cell turnover, leading to thick, scaly patches that may affect the scalp as well as other parts of the body. Understanding these distinctions helps in identifying and treating various scalp issues more effectively.